list_prepend_multiple

WHAT IT DOES

What list_prepend_multiple does on Amazon ElastiCache Memcached MCP Server

AI agents use list_prepend_multiple to create or update resources in Amazon ElastiCache Memcached MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Amazon ElastiCache Memcached MCP Server environment.

WHY IT NEEDS A POLICY

Why list_prepend_multiple needs a policy

This tool modifies data in Memcached by prepending values to lists. It is a reversible write operation (data can be removed), making it Write category. Misuse could corrupt cached data affecting application behavior, warranting medium severity.

From the tool's definition 'Prepend multiple values to list' - modifies existing list data by adding values at the beginning

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

list_prepend_multiple Rate-limited

list_prepend_multiple stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "list_prepend_multiple": {
      "limits": [
        {
          "counter": "list_prepend_multiple_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Amazon ElastiCache Memcached MCP Server, so you can run agents against it safely.

FAQ

Questions about list_prepend_multiple

What does the list_prepend_multiple tool do? +

Prepend multiple values to list. It is categorised as a Write tool in the Amazon ElastiCache Memcached MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on list_prepend_multiple? +

Register the Amazon ElastiCache Memcached MCP Server MCP server in PolicyLayer and add a rule for list_prepend_multiple: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Amazon ElastiCache Memcached MCP Server. Nothing to install.

What risk level is list_prepend_multiple? +

list_prepend_multiple is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit list_prepend_multiple? +

Yes. Add a rate_limit block to the list_prepend_multiple rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block list_prepend_multiple completely? +

Set action: deny in the PolicyLayer policy for list_prepend_multiple. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides list_prepend_multiple? +

list_prepend_multiple is provided by the Amazon ElastiCache Memcached MCP Server MCP server (awslabs.memcached-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.